6 Equal Divisions of the Tritave

Degrees	Cents	ApproximateRatios
0	0	1/1
1	316.993	6/5, 65/54
2	633.985	13/9
3	950.978	19/11, 26/15
4	1267.970	27/13
5	1584.963	5/2 (5/4 plus an octave)
6	1901.955	3/1

Since 6edt contains 1 intervals of 2edt and 2 intervals of 3edt, it only introduces 2 new notes. These new notes happen to approximate 6/5 and 5/2 quite well.
6edt is therefore smallest edt other than 5edt to accurately approximate 5-limit harmony. 6edt allows for construction of chords chords such as 2:5:6:15:18:26:31:45:54...